Question

At same temperature urms is maximum among CH4,SO2 ,SO3and He is

Answer 1

Answer:He

Explanation:As it's molecular weight is less among those

Answer 2

Helium (He) will have the maximum $u_{r.m.s}$.

Explanation:

It is known that relation between expression for calculating $u_{r.m.s}$ is as follows.

       $u_{r.m.s} = \sqrt{\frac{3RT}{M}}$

As the $u_{r.m.s}$ speed is inversely proportional to the molecular mass of a substance. Molar mass of $CH_{4}$ is 16 g/mol, molar mass of $SO_{2}$ is 64.06 g/mol, molar mass of $SO_{3}$ is 80.06 g/mol, and molar mass of He is 4 g/mol.

Hence, more is the molar mass of compound least will be its $u_{r.m.s}$ and vice-versa.

Therefore, He will have the maximum $u_{r.m.s}$.

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